Involute flat pipe bending device

Abstract

The invention discloses an involute flat pipe bending device, and belongs to the technical field of pipe bending equipment, the involute flat pipe bending device comprises a bottom plate, the bottom plate is provided with a fixing assembly, the bottom plate is further rotatably provided with an angle adjusting rotating plate, the angle adjusting rotating plate is provided with a propelling assembly and an auxiliary assembly, and the fixing assembly can conveniently replace an annular mounting seat provided with a needed center mold according to needs; according to the pipe bending device, the pipe bending requirements of pipe column pieces of different specifications and sizes can be met, automatic conveying of pipe fittings can be achieved through the pushing assembly, auxiliary supporting can be conducted on the positions, closest to the fixing assembly, of the pipe fittings under cooperation of the auxiliary assembly, and therefore bent parts before pipe fitting bending are prevented from being cleaned; according to the central mold, the positions of the first strip-shaped sliding plate and the pressing sliding plate can be limited, so that the stability of the central mold is improved, and through mutual cooperation of the fixing assembly, the pushing assembly and the auxiliary assembly and under the action of the pressing circular plate, the pipe bending requirements of bent involute flat coil pipes with different pipe diameters can be met.

Description

Technical Field

[0001] The invention relates to the technical field of pipe bending equipment, and in particular to an involute flat pipe bending device. Background Art

[0002] An involute flat pipe bending device is a device for bending involute flat pipes according to different pipe diameters. In the prior art, the involute flat pipe bending is mainly achieved by setting different bending curvatures of three or more guide wheels. However, this method has significant limitations. It relies on the change of the curvature of the bend to form the overall shape of the bend, resulting in the bend usually being conical rather than an ideal flat state. In order to achieve the flat state, it is often necessary to perform a pressing process in the later stage of the bend, but this step brings new problems. The bent pipe after pressing often cannot synchronously adjust the gap between the circles, thereby affecting the final quality and performance of the bent pipe. Therefore, the present invention provides an involute flat pipe bending device. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides a progressive flat pipe bending device, which overcomes the problem that different bending curvatures need to be set by three or more guide wheels to achieve pipe bending. The overall bending of the pipe is formed into a cone shape due to the change in the curvature of the bending pipe, which makes it impossible for the bending pipe to be formed into a flat state. After being pressed into a flat state, the gap between the circles cannot be adjusted synchronously.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a kind of involute flat pipe bending device, comprising a base plate, the base plate is provided with a fixed component, the fixed component comprises an annular support frame, 4 strip slides 1, 4 strip slides 2 and 4 pressing slides are movably arranged on the annular support frame, an annular mounting seat is arranged between the 4 strip slides 1, the 4 strip slides 2 and the 4 pressing slides, a center mold is fixedly arranged on the annular mounting seat, a limiting unit is also arranged on the annular support frame, the limiting unit is used to limit the position of the strip slide 1 and the pressing slide, an angle adjustment rotating plate is also rotatably installed on the base plate, a propulsion component and an auxiliary component are arranged on the angle adjustment rotating plate, the propulsion component comprises a propulsion ring frame, the auxiliary component comprises an auxiliary ring frame, three centering slides are slidably installed in a circular array on the auxiliary ring frame and the propulsion ring frame, the centering slides are provided with centering wheels, and the centering wheels are used to limit the position of the pipe to be processed.

[0005] Furthermore, the annular support frame is fixedly installed on the base plate, 4 strip skateboards 1 are slidably installed in a circular array on the annular support frame, 4 strip skateboards 2 are slidably installed in a circular array on the annular support frame, strip skateboard 1 and strip skateboard 2 are arranged at intervals, and the sizes of strip skateboard 1 and strip skateboard 2 are equal, and 4 pressing skateboards are also slidably installed in a circular array on the annular support frame, and strip skateboard 2 and the pressing skateboard are arranged opposite to each other.

[0006] Furthermore, the annular mounting seat is provided with 8 engaging grooves in a circumferential array which cooperate with the strip slide 2, the end of the strip slide 1 which is closest to the axis of the annular mounting seat is fixedly provided with a supporting short column, and the corresponding engaging groove of the strip slide 1 is also provided with a through hole which cooperates with the supporting short column, the end of the pressing slide which is closest to the axis of the annular mounting seat is an inclined surface, and the annular mounting seat is also provided with 4 triangular grooves in a circumferential array which cooperate with the end of the pressing slide which is closest to the axis of the annular mounting seat.

[0007] Furthermore, eight transmission gears 2 are rotatably installed in a circular array of the annular support frame, and a transmission gear ring is also rotatably installed on the annular support frame. The transmission gears 2 are meshed with the transmission gear ring to form a gear pair. Transmission racks are fixedly arranged on the sides of the strip skateboard 1 and the strip skateboard 2. Transmission gear 1 is rotatably installed on the transmission gear 2. A torsion spring is arranged between the transmission gear 1 and the transmission gear 2, and the transmission rack is meshed with the corresponding transmission gear 1 to form a gear rack pair.

[0008] Furthermore, four driven gears 1 are rotatably installed in a circular array on the annular support frame, and torsion springs are arranged between the driven gears 1 and the annular support frame. Driven racks are fixedly arranged on the sides of the pressing slide plate, and the driven gears 1 are meshed with the corresponding driven racks to form a gear rack pair. Driven gears 2 are fixedly installed on the driven gears 1, and a driven gear ring is rotatably installed on the annular support frame, and the driven gears 2 are meshed with the driven gear ring to form a gear pair.

[0009] Furthermore, two L-shaped support plates are fixedly arranged in a circular array on the transmission gear ring, and transmission push rods are fixedly arranged on the L-shaped support plates. Two driven short plates are also fixedly arranged in a circular array on the driven gear ring, and the transmission push rods are used to push the driven short plates to move.

[0010] Furthermore, the limiting unit includes an inner limiting ratchet ring slidably mounted on the annular support frame, and an outer limiting ratchet ring is fixedly mounted on the driven gear ring. When the inner limiting ratchet ring is engaged with the outer limiting ratchet ring, a ratchet mechanism is formed. A short limiting rod is fixedly arranged on the L-shaped support plate, and two fan-shaped strips are fixedly arranged in a circular array on the inner limiting ratchet ring. A limiting inclined plate is fixedly arranged on each fan-shaped strip. The two limiting inclined plates are located at the ends farthest from each other of the two fan-shaped strips. The short limiting rod and the limiting inclined plate are used to adjust the position of the inner limiting ratchet ring.

[0011] Furthermore, the auxiliary ring frame is fixedly mounted on the angle adjustment rotating plate, the propulsion ring frame is slidably mounted on the angle adjustment rotating plate, the axes of the auxiliary ring frame and the propulsion ring frame are in the same straight line, the auxiliary ring frame and the propulsion ring frame are both rotatably mounted with centering gear rings, three arc-shaped slide plates are fixedly arranged in a circumferential array on the centering gear rings, a centering short rod is fixedly arranged at the end of the centering slide plate farthest from the axis of the auxiliary ring frame, the centering short rod is movably connected to the corresponding arc-shaped slide plate, the centering wheel on the auxiliary ring frame is rotatably connected to the corresponding centering slide plate, and the centering wheel on the propulsion ring frame is fixedly connected to the corresponding centering slide plate.

[0012] Furthermore, a pressing circular plate is slidably installed on the bottom plate, the axes of the pressing circular plate and the annular mounting seat are in the same straight line, the surfaces of the strip slide plate 1 and the strip slide plate 2 closest to the pressing circular plate are in the same plane, and the center line of the rotating connection between the angle adjustment rotating plate and the bottom plate is in the same straight line with the center line of the center mold.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) By setting a fixed component, the present invention can facilitate the replacement of the annular mounting seat with the required central mold according to the needs, so as to adapt to the bending requirements of pipe column parts of different specifications and sizes. (2) By setting a propulsion component, the present invention can realize the automatic transportation of pipe fittings, and with the cooperation of the auxiliary component, it can provide auxiliary support for the position of the pipe fitting closest to the fixed component, thereby preventing the cleaning of the bend before the pipe fitting is bent. (3) By setting a limit unit, the present invention can limit the position of the strip slide and the pressing slide, thereby improving the stability of the central mold. (4) By the mutual cooperation of the fixed component, the propulsion component and the auxiliary component, and under the action of the pressing circular plate, the present invention can meet the bending requirements of the involute flat coil with different pipe diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a top view of the overall structure of the present invention.

[0016] Figure 3 It is a schematic structural diagram of the fixing assembly of the present invention.

[0017] Figure 4 It is a schematic structural diagram of the transmission gear ring of the present invention.

[0018] Figure 5 It is a schematic structural diagram of the driven gear ring of the present invention.

[0019] Figure 6 It is a schematic structural diagram of the adjusting gear ring of the present invention.

[0020] Figure 7 It is a front view of the structure of the limiting inclined plate of the present invention.

[0021] Figure 8 It is a structural schematic diagram of the driven short plate of the present invention.

[0022] Fig. 9 It is a structural schematic diagram of the angle adjustment rotating plate of the present invention.

[0023] Fig.10 It is a schematic structural diagram of the centering gear ring of the present invention.

[0024] Reference numerals: 101-bottom plate; 102-angle adjustment plate; 103-pressing circular plate; 104-feeding screw rod; 105-feeding motor; 106-annular support frame; 107-angle adjustment motor; 108-auxiliary ring frame; 109-advancing ring frame; 110-advancing screw rod; 111-advancing motor; 112-centering wheel; 113-centering gear ring; 114-centering slide plate; 115-centering gear; 116-centering motor; 117-centering short rod; 118-arc slide plate; 119-annular mounting seat; 120-center mold; 121-strip slide plate one; 122-strip slide plate two; 123 -limiting inner ratchet ring; 124-driven gear ring; 125-limiting outer ratchet ring; 126-transmission gear ring; 127-transmission rack; 128-transmission gear one; 129-transmission gear two; 130-pressing slide plate; 131-driven rack; 132-driven gear one; 133-driven gear two; 134-engaging groove; 135-triangular groove; 136-adjusting gear ring; 137-adjusting motor; 138-adjusting gear; 139-fan-shaped strip plate; 140-L-shaped support plate; 141-limiting short rod; 142-limiting inclined plate; 143-supporting short column; 144-driven short plate; 145-transmission push rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] Example: Reference Figure 1-Figure 10A progressive flat pipe bending device comprises a base plate 101, the base plate 101 is provided with a fixed component, the fixed component comprises an annular support frame 106, the annular support frame 106 is fixedly mounted on the base plate 101, and the annular support frame 106 is movably provided with 4 strip slides 121, 4 strip slides 122, and 4 pressing slides 130, the 4 strip slides 121 are slidably mounted on the annular support frame 106 in a circular array, and the 4 strip slides 122 are slidably mounted on the annular support frame 106 in a circular array, the strip slides 121 and the strip slides 122 are arranged at intervals, and the sizes of the strip slides 121 and the strip slides 122 are equal, and the 4 pressing slides 130 are also slidably mounted on the annular support frame 106 in a circular array, and the strip slides 122 and the pressing slides 130 are arranged relatively.

[0027] An annular mounting seat 119 is arranged between the four strip slides 121, the four strip slides 122, and the four pressing slides 130, and a central mold 120 is fixedly arranged on the annular mounting seat 119. Eight engaging grooves 134 cooperating with the strip slides 122 are arranged in a circular array on the annular mounting seat 119, and supporting short columns 143 are fixedly arranged on the ends of the strip slides 121 closest to the axis of the annular mounting seat 119, and through holes cooperating with the supporting short columns 143 are also arranged on the engaging grooves 134 corresponding to the strip slides 121.

[0028] Eight transmission gears 129 are rotatably installed in a circular array on the annular support frame 106. A transmission gear ring 126 is also rotatably installed on the annular support frame 106. The transmission gears 129 are meshed with the transmission gear ring 126 to form a gear pair. Transmission racks 127 are fixedly installed on the sides of the strip slide 121 and the strip slide 2 122. Transmission gears 128 are rotatably installed on the transmission gears 129. A torsion spring is provided between the transmission gear 128 and the transmission gear 2 129. One end of the torsion spring is fixedly connected to the transmission gear 128, and the other end of the torsion spring is fixedly connected to the transmission gear 2 129. The transmission rack 127 is meshed with the corresponding transmission gear 128 to form a gear rack pair.

[0029] The drive gear ring 126 is driven to rotate, and the eight transmission gears 129 rotate synchronously. Under the action of the torsion spring between the transmission gear 1 128 and the transmission gear 2 129, the transmission gear 1 128 rotates synchronously. Under the action of the transmission rack 127, the four strip slides 121 and the four strip slides 122 move synchronously toward the direction close to the axis of the transmission gear ring 126 or synchronously away from the axis of the transmission gear ring 126. According to the size of the annular mounting seat 119 to be installed, the strip slides 121 and the strip slides 122 are moved to the specified position, and then the engagement grooves 134 on the annular mounting seat 119 are aligned with the strip slides 121 and the strip slides 122. When the slider 122 is engaged, the through hole on the engagement groove 134 is engaged with the corresponding supporting short column 143, that is, the installation of the annular mounting seat 119 is realized. At this time, the transmission gear ring 126 is continued to be driven to rotate. Since the strip slider 121 and the strip slider 2 122 are engaged with the corresponding engagement groove 134, the strip slider 1 121 and the strip slider 2 122 cannot continue to move toward the direction close to the axis of the transmission gear ring 126, that is, the transmission gear 1 128 cannot continue to rotate at this time, and the torsion spring between the transmission gear 1 128 and the transmission gear 2 129 is compressed. Under the action of the transmission gear ring 126, the transmission gear 2 129 continues to rotate relative to the transmission gear 1 128.

[0030] The end of the pressing slide 130 closest to the axis of the annular mounting seat 119 is an inclined surface. The annular mounting seat 119 is also provided with four triangular grooves 135 in a circumferential array that cooperate with the end of the pressing slide 130 closest to the axis of the annular mounting seat 119. Four driven gears 132 are rotatably installed in a circumferential array on the annular support frame 106. A torsion spring is provided between the driven gear 132 and the annular support frame 106. One end of the torsion spring is fixedly connected to the driven gear 132, and the other end of the torsion spring is fixedly connected to the annular support frame 106. A driven rack 131 is fixedly provided on the side of the pressing slide 130. The driven gear 132 is meshed with the corresponding driven rack 131 to form a gear rack pair. A driven gear 2 133 is fixedly installed on the driven gear 132. A driven gear ring 124 is also rotatably installed on the annular support frame 106. The driven gear 2 133 is meshed with the driven gear ring 124 to form a gear pair.

[0031] The driven gear ring 124 is driven to rotate, that is, the four driven gears 2 133 rotate synchronously, and the four driven gears 1 132 also rotate synchronously. The torsion spring between the driven gear 1 132 and the annular support frame 106 is compressed. Under the action of the driven rack 131, the four pressing slides 130 move toward the direction close to the axis of the driven gear ring 124. The inclined surface of the end of the pressing slide 130 closest to the axis of the driven gear ring 124 contacts the corresponding triangular groove 135. Under the action of the surface and the triangular groove 135, the annular mounting seat 119 moves toward the direction close to the strip slide 121, so that the through hole on the engaging groove 134 is fully engaged with the corresponding supporting short column 143. At this time, the end of the pressing slide 130 is fully engaged with the corresponding triangular groove 135. That is, at this time, under the action of the strip slide 121, the strip slide 2 122, the pressing slide 130, the engaging groove 134, the triangular groove 135, and the supporting short column 143, the annular mounting seat 119 is fixed.

[0032] Two L-shaped support plates 140 are fixedly arranged in a circumferential array on the transmission gear ring 126, and a transmission push rod 145 is fixedly arranged on each of the L-shaped support plates 140. Two driven short plates 144 are also fixedly arranged in a circumferential array on the driven gear ring 124, and the transmission push rod 145 is used to push the driven short plates 144 to move.

[0033] In the initial position, the strip slide 121, the strip slide 2 122, and the pressing slide 130 are all located at the farthest position from the axis of the transmission gear ring 126. At this time, the torsion spring between the driven gear 1 132 and the annular support frame 106 and the torsion spring between the transmission gear 1 128 and the transmission gear 2 129 are not compressed, and at this time, the transmission push rod 145 is in contact with the corresponding driven short plate 144.

[0034] The driving gear ring 126 rotates, and the L-shaped support plate 140 on the driving gear ring 126 rotates synchronously, that is, the driving push rod 145 also rotates synchronously. At this time, the driving push rod 145 rotates in the direction away from the driven short plate 144 in contact with it. After the position adjustment of the strip slide 121 and the strip slide 2 122 is completed, and the annular mounting seat 119 is installed on the strip slide 121 and the strip slide 2 122, the driving gear ring 126 continues to rotate, and the torque between the driving gear 128 and the driving gear 2 129 is increased. The spring is compressed, and the transmission push rod 145 continues to rotate, and finally the transmission push rod 145 contacts another driven short plate 144. At this time, the transmission ring gear 126 rotates 180 degrees relative to the annular support frame 106, and the transmission ring gear 126 continues to rotate. Under the action of the driven short plate 144 and the transmission push rod 145, the driven ring gear 124 rotates synchronously, that is, the driven gear 2 133 rotates, and the driven gear 1 132 rotates synchronously, and the torsion spring between the driven gear 1 132 and the annular support frame 106 is compressed.

[0035] A limiting unit is also provided on the annular support frame 106, and the limiting unit is used to limit the position of the strip slide 121 and the pressing slide 130. The limiting unit includes an inner limiting ratchet ring 123 slidably mounted on the annular support frame 106, and springs are symmetrically arranged between the inner limiting ratchet ring 123 and the annular support frame 106. A limiting outer ratchet ring 125 is also fixedly mounted on the driven gear ring 124, and a ratchet mechanism is formed when the inner limiting ratchet ring 123 is engaged with the outer limiting ratchet ring 125.

[0036] A limiting short rod 141 is also fixedly provided on the L-shaped support plate 140, and two fan-shaped strips 139 are also fixedly provided in a circumferential array on the limiting inner ratchet ring 123. A limiting inclined plate 142 is fixedly provided on the fan-shaped strips 139. The two limiting inclined plates 142 are located at the ends farthest from each other of the two fan-shaped strips 139. The limiting short rod 141 and the limiting inclined plate 142 are used to adjust the position of the limiting inner ratchet ring 123.

[0037] In the initial position, that is, the strip slide 121, the strip slide 122, and the pressing slide 130 are all located at the farthest position from the axis of the transmission gear ring 126. At this time, the limiting short rod 141 is located on the upper surface of the corresponding fan-shaped strip plate 139. Under the action of the limiting short rod 141, the spring between the limiting inner ratchet ring 123 and the annular support frame 106 is in a compressed state, that is, at this time, the limiting inner ratchet ring 123 and the limiting outer ratchet ring 125 are not engaged.

[0038] The transmission gear ring 126 is driven to rotate, and the limiting short rod 141 rotates synchronously, that is, the limiting short rod 141 rotates on the upper surface of the fan-shaped strip plate 139. When the strip slide 121 and the strip slide 2 122 cannot continue to move, the transmission gear ring 126 continues to rotate, that is, the limiting short rod 141 continues to rotate, and then the limiting short rod 141 moves to the position of the limiting inclined plate 142 on the fan-shaped strip plate 139. The transmission gear ring 126 continues to rotate, and the limiting short rod 141 moves along the inclined surface of the limiting inclined plate 142, that is, the limiting short rod 141 contacts the pressing force on the fan-shaped strip plate 139. The spring between the inner limit ratchet ring 123 and the annular support frame 106 begins to recover, and finally the limit short rod 141 is completely disengaged from the limit inclined plate 142. At this time, the spring between the inner limit ratchet ring 123 and the annular support frame 106 is completely recovered, that is, the inner limit ratchet ring 123 and the outer limit ratchet ring 125 are engaged to form a ratchet mechanism. At this time, the transmission gear ring 126 rotates 180 degrees relative to the annular support frame 106, the transmission gear ring 126 continues to rotate, and the driven gear ring 124 rotates synchronously. The limit short rod 141 rotates below the fan-shaped strip 139 at this time.

[0039] When the inner limiting ratchet ring 123 and the outer limiting ratchet ring 125 are engaged to form a ratchet mechanism, the outer limiting ratchet ring 125 cannot rotate in the opposite direction relative to the annular support frame 106, that is, the rotation direction of the driven gear ring 124 is restricted, and then the position of the pressing slide 130 is locked. When the pressing slide 130 cannot move, the annular mounting seat 119 cannot be removed, and then under the action of the supporting short column 143, the strip slide 121 cannot move freely, that is, the positions of the strip slide 121 and the pressing slide 130 are locked.

[0040] When the annular mounting seat 119 needs to be replaced, the driving gear ring 126 is driven to rotate in the opposite direction. At this time, the driven gear ring 124 cannot rotate in the opposite direction under the action of the limiting inner ratchet ring 123 and the limiting outer ratchet ring 125, that is, at this time, the driven gear ring 124 cannot rotate relative to the limiting outer ratchet ring 125, and the torsion spring between the transmission gear 2 129 and the transmission gear 1 128 begins to recover, and the limiting short rod 141 rotates in the direction close to the limiting inclined plate 142, and finally makes the limiting short rod 141 contact the limiting inclined plate 142, and the transmission gear ring 126 continues to rotate, and the limiting short rod 141 moves along the inclined surface of the limiting inclined plate 142. Under the action of the limiting short rod 141 and the limiting inclined plate 142, the fan-shaped strip plate 139 moves in the direction away from the driven gear ring 124, that is, the limiting The spring between the inner ratchet ring 123 and the annular support frame 106 is compressed, and finally the limiting short rod 141 moves to the upper surface of the fan-shaped strip 139. At this time, the limiting inner ratchet ring 123 disengages from the limiting outer ratchet ring 125, and at this time the torsion spring between the transmission gear 1 128 and the transmission gear 2 129 has not fully recovered. When the limiting inner ratchet ring 123 and the limiting outer ratchet ring 125 disengage, under the action of the torsion spring between the driven gear 1 132 and the annular support frame 106, the driven gear 1 132 rotates, so that the pressing slide 130 moves in the direction away from the axis of the driven gear ring 124, and finally the pressing slide 130 moves to the position farthest from the axis of the driven gear ring 124, that is, the pressing slide 130 releases the restriction on the position of the annular mounting seat 119.

[0041] An angle adjustment rotating plate 102 is also rotatably installed on the base plate 101, an angle adjustment motor 107 is fixedly installed on the base plate 101, the output shaft of the angle adjustment motor 107 is fixedly connected to the angle adjustment rotating plate 102, a propulsion assembly and an auxiliary assembly are arranged on the angle adjustment rotating plate 102, the propulsion assembly includes a propulsion ring frame 109, the propulsion ring frame 109 is slidably installed on the angle adjustment rotating plate 102, a propulsion screw rod 110 is rotatably installed on the angle adjustment rotating plate 102, the propulsion screw rod 110 and the propulsion ring frame 109 constitute a spiral pair, a propulsion motor 111 is fixedly installed on the angle adjustment rotating plate 102, the output shaft of the propulsion motor 111 is fixedly connected to the propulsion screw rod 110, the auxiliary assembly includes an auxiliary ring frame 108, the auxiliary ring frame 108 is fixedly installed on the angle adjustment rotating plate 102, and the axes of the auxiliary ring frame 108 and the propulsion ring frame 109 are on the same straight line.

[0042] The auxiliary ring frame 108 and the propulsion ring frame 109 are both slidably mounted with three centering slides 114 in a circumferential array, and the centering slides 114 are both provided with centering wheels 112, which are used to limit the position of the pipe to be processed. The centering wheels 112 on the auxiliary ring frame 108 are rotatably connected to the corresponding centering slides 114, and the centering wheels 112 on the propulsion ring frame 109 are fixedly connected to the corresponding centering slides 114. The auxiliary ring frame 108 and the propulsion ring frame 109 are both rotatably mounted with centering gear rings 113. The auxiliary ring frame 108 and the propulsion ring frame 109 are both fixedly installed with a centering motor 116, and a centering gear 115 is fixedly installed on the output shaft of the centering motor 116. The centering gear 115 and the corresponding centering gear ring 113 constitute a gear pair, and three arc-shaped slide plates 118 are fixedly arranged in a circumferential array on the centering gear ring 113. The end of the centering slide plate 114 farthest from the axis of the auxiliary ring frame 108 is fixedly provided with a centering short rod 117, and the centering short rod 117 is movably connected to the corresponding arc-shaped slide plate 118.

[0043] In the initial position, the centering slide plate 114 is located at the position farthest from the axis of the auxiliary ring frame 108. The propulsion motor 111 is started according to the length of the pipe to be processed to drive the propulsion screw rod 110 to rotate, so that the propulsion ring frame 109 moves towards the direction close to the auxiliary ring frame 108, that is, the distance between the auxiliary ring frame 108 and the propulsion ring frame 109 is adjusted, and the two ends of the pipe to be processed are placed at the center position of the auxiliary ring frame 108 and the propulsion ring frame 109 respectively, and then the two centering motors 116 are started to drive the corresponding centering gears 116 respectively. 5 rotates, that is, the centering gear ring 113 rotates relative to the axis of the auxiliary ring frame 108, and the three arc-shaped slide plates 118 on the centering gear ring 113 rotate synchronously. Under the action of the centering short rod 117, the centering slide plates 114 all move toward the direction close to the axis of the auxiliary ring frame 108, and finally the centering wheels 112 all contact the surface of the pipe. Under the action of multiple centering wheels 112, the centering adjustment of the pipe is achieved, and under the action of the centering wheel 112 on the propulsion ring frame 109, the pipe is clamped and fixed.

[0044] At this time, the propulsion motor 111 is started to move the propulsion ring frame 109 toward the auxiliary ring frame 108. Under the action of the centering wheel 112 on the propulsion ring frame 109, the pipe is moved synchronously, and the centering wheel 112 on the auxiliary ring frame 108 rotates.

[0045] A pressing circular plate 103 is also slidably mounted on the base plate 101, a feed screw 104 is rotatably mounted on the base plate 101, a feed motor 105 is fixedly mounted on the base plate 101, an output shaft of the feed motor 105 is fixedly connected to the feed screw 104, the feed screw 104 and the pressing circular plate 103 form a spiral pair, the axes of the pressing circular plate 103 and the annular mounting seat 119 are in the same straight line, the surfaces of the strip slide 121 and the strip slide 2 122 closest to the pressing circular plate 103 are in the same plane, the center line of the rotational connection between the angle adjustment rotating plate 102 and the base plate 101 is in the same straight line with the center line of the center mold 120, and the feed motor 105 is started to drive the feed screw 104 to rotate, so that the pressing circular plate 103 moves along the axis of the feed screw 104.

[0046] A positioning gear ring 136 is also rotatably mounted on the annular support frame 106, and the positioning gear ring 136 is fixedly connected to two L-shaped support plates 140. The axes of the positioning gear ring 136 and the driven gear ring 124 are in the same straight line. A positioning motor 137 is fixedly mounted on the annular support frame 106, and a positioning gear 138 is fixedly mounted on the output shaft of the positioning motor 137. The positioning gear 138 and the positioning gear ring 136 are meshed to form a gear pair. The positioning motor 137 is started to drive the positioning gear 138 to rotate, and the positioning gear ring 136 rotates. Under the action of the L-shaped support plate 140, the transmission gear ring 126 rotates synchronously.

[0047] Working principle: According to the size of the pipe to be bent and the shape of the involute to be formed, the annular mounting seat 119 with the corresponding central mold 120 is selected, and then the positioning motor 137 is started to drive the positioning gear ring 136 to rotate, and the transmission gear ring 126 rotates synchronously. According to the required size of the annular mounting seat 119, the positions of the strip slide 121 and the strip slide 2 122 are adjusted. When the annular mounting seat 119 is adjusted to the specified position, the annular mounting seat 119 is installed on the strip slide 121 and the strip slide 2 122, and then the transmission gear ring 126 is driven to rotate, and the transmission gear 1 128 and the transmission gear 2 129 are rotated. The torsion spring is compressed, so that the limiting short rod 141 is out of contact with the fan-shaped strip 139 and the limiting inclined plate 142. At this time, the transmission gear ring 126 rotates 180 degrees relative to the annular support frame 106, and the transmission push rod 145 contacts the corresponding driven short plate 144. The transmission gear ring 126 continues to rotate. Under the action of the driven short plate 144 and the transmission push rod 145, the driven gear ring 124 rotates synchronously, and the limiting outer ratchet ring 125 rotates relative to the limiting inner ratchet ring 123. Under the action of the driven gear ring 124, the end of the pressing slide plate 130 is engaged with the corresponding triangular groove 135, thereby achieving the fixation of the annular mounting seat 119.

[0048] Then start the propulsion motor 111 to adjust the distance between the auxiliary ring frame 108 and the propulsion ring frame 109, and place the two ends of the pipe fitting on the inner side of the auxiliary ring frame 108 and the propulsion ring frame 109 respectively, and then start the centering motor 116 to make the centering slide plate 114 move toward the direction close to the axis of the auxiliary ring frame 108, and finally make the centering wheel 112 contact the surface of the pipe fitting, that is, the centering adjustment and fixation of the pipe fitting is achieved under the action of the centering wheel 112, and then start the angle adjustment motor 107 to drive the angle adjustment rotating plate 102 to rotate relative to the base plate 101, so that the axis of the auxiliary ring frame 108 moves to the same line as the axis of the annular mounting seat 119.

[0049] Restarting the propulsion motor 111 causes the propulsion ring frame 109 to move toward the auxiliary ring frame 108, and the pipe fitting moves synchronously. The centering wheel 112 on the auxiliary ring frame 108 rotates relative to the pipe fitting, and finally the end of the pipe fitting farthest from the propulsion ring frame 109 moves to the inside of the central mold 120. Then, the angle adjustment motor 107 is started to drive the angle adjustment plate 102 to rotate, so that the pipe fitting located at the end of the central mold 120 rotates. According to the size of the involute to be formed, the angle between the axis of the auxiliary ring frame 108 and the axis of the annular mounting seat 119 is adjusted.

[0050] After the axis of the auxiliary ring frame 108 is positioned relative to the annular mounting seat 119, the propulsion motor 111 is started to make the propulsion ring frame 109 continue to move toward the auxiliary ring frame 108, and the pipe fitting moves synchronously. The position of the pipe fitting at the center mold 120 forms a gradually opening shape toward the outside of the center mold 120. After the propulsion ring frame 109 moves to the position closest to the auxiliary ring frame 108, the gradually opening bending of the pipe fitting is completed. In the process of bending the pipe fitting, the feed motor 105 is started to drive the pressing circular plate 103 to move toward the annular support frame 106. Under the action of the plane formed by the pressing circular plate 103, the strip slide 1 121 and the strip slide 2 122, the bent pipe is made into a flat shape.

[0051] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. An involute flat pipe bending device, comprising a bottom plate (101), characterized in that: The bottom plate (101) is provided with a fixing component, which includes an annular support frame (106), on which four strip-shaped slide plates (121), four strip-shaped slide plates (122), and four pressing slide plates (130) are movably provided, an annular mounting seat (119) is provided between the four strip-shaped slide plates (121), the four strip-shaped slide plates (122), and the four pressing slide plates (130), and a central mold (120) is fixedly provided on the annular mounting seat (119), and a limiting unit is also provided on the annular support frame (106), and the limiting unit is used to limit the positions of the strip-shaped slide plates (121) and the pressing slide plates (130); The bottom plate (101) is also rotatably mounted with an angle adjustment rotating plate (102), and a propulsion assembly and an auxiliary assembly are arranged on the angle adjustment rotating plate (102), the propulsion assembly comprising a propulsion ring frame (109), and the auxiliary assembly comprising an auxiliary ring frame (108), and three centering slides (114) are slidably mounted in a circular array on the auxiliary ring frame (108) and the propulsion ring frame (109), and the centering slides (114) are each provided with a centering wheel (112), and the centering wheel (112) is used to limit the position of the pipe to be processed.

2. The involute flat pipe bending device according to claim 1, characterized in that: The annular support frame (106) is fixedly mounted on the bottom plate (101); the four strip slides (121) are slidably mounted on the annular support frame (106) in a circular array; the four strip slides (122) are slidably mounted on the annular support frame (106) in a circular array; the strip slides (121) and the strip slides (122) are arranged at intervals; the strip slides (121) and the strip slides (122) are of equal size; the four pressing slides (130) are also slidably mounted on the annular support frame (106) in a circular array; the strip slides (122) and the pressing slides (130) are arranged relative to each other.

3. The involute flat pipe bending device according to claim 2, characterized in that: The annular mounting seat (119) is provided with 8 engagement grooves (134) in a circular array that cooperate with the strip slide plate 2 (122); the end of the strip slide plate 1 (121) closest to the axis of the annular mounting seat (119) is fixedly provided with a supporting short column (143); the engagement groove (134) corresponding to the strip slide plate 1 (121) is also provided with a through hole that cooperates with the supporting short column (143); the end of the pressing slide plate (130) closest to the axis of the annular mounting seat (119) is an inclined surface; and the annular mounting seat (119) is also provided with 4 triangular grooves (135) in a circular array that cooperate with the end of the pressing slide plate (130) closest to the axis of the annular mounting seat (119).

4. The involute flat pipe bending device according to claim 3, characterized in that: The annular support frame (106) is rotatably mounted with eight transmission gears (129) in a circular array. A transmission gear ring (126) is also rotatably mounted on the annular support frame (106). The transmission gears (129) are meshed with the transmission gear ring (126) to form a gear pair. The sides of the strip-shaped slide plate (121) and the strip-shaped slide plate (122) are fixedly mounted with transmission racks (127). The transmission gears (128) are rotatably mounted on the transmission gears (129). A torsion spring is arranged between the transmission gears (128) and the transmission gears (129). The transmission racks (127) are meshed with the corresponding transmission gears (128) to form a gear rack pair.

5. The involute flat pipe bending device according to claim 4, characterized in that: Four driven gears (132) are rotatably mounted in a circular array on the annular support frame (106), and torsion springs are arranged between the driven gears (132) and the annular support frame (106). A driven rack (131) is fixedly mounted on the side of the pressing slide plate (130), and the driven gears (132) are meshed with the corresponding driven racks (131) to form a gear rack pair. A driven gear (133) is fixedly mounted on the driven gear (132), and a driven gear ring (124) is also rotatably mounted on the annular support frame (106), and the driven gears (133) are meshed with the driven gear ring (124) to form a gear pair.

6. The involute flat pipe bending device according to claim 5, characterized in that: The transmission gear ring (126) has two L-shaped support plates (140) fixedly arranged in a circumferential array, each of the L-shaped support plates (140) having a transmission push rod (145) fixedly arranged thereon. The driven gear ring (124) also has two driven short plates (144) fixedly arranged in a circumferential array, and the transmission push rod (145) is used to push the driven short plates (144) to move.

7. The involute flat pipe bending device according to claim 6, characterized in that: The limiting unit comprises a limiting inner ratchet ring (123) slidably mounted on the annular support frame (106); a limiting outer ratchet ring (125) is also fixedly mounted on the driven gear ring (124); the limiting inner ratchet ring (123) and the limiting outer ratchet ring (125) form a ratchet mechanism when engaged; a limiting short rod (141) is also fixedly arranged on the L-shaped support plate (140); two fan-shaped strips (139) are also fixedly arranged in a circumferential array on the limiting inner ratchet ring (123); limiting inclined plates (142) are fixedly arranged on the fan-shaped strips (139); the two limiting inclined plates (142) are located at the ends of the two fan-shaped strips (139) that are farthest apart; the limiting short rod (141) and the limiting inclined plate (142) are used to adjust the position of the limiting inner ratchet ring (123).

8. The involute flat pipe bending device according to claim 7, characterized in that: The auxiliary ring frame (108) is fixedly mounted on the angle adjustment rotating plate (102), and the propulsion ring frame (109) is slidably mounted on the angle adjustment rotating plate (102). The axes of the auxiliary ring frame (108) and the propulsion ring frame (109) are on the same straight line. A centering toothed ring (113) is rotatably mounted on the auxiliary ring frame (108) and the propulsion ring frame (109). The centering toothed ring (113) is fixedly provided with three arc-shaped slide groove plates (113) in a circumferential array. 18), the end of the centering slide plate (114) farthest from the axis of the auxiliary ring frame (108) is fixedly provided with a centering short rod (117), the centering short rod (117) is movably connected to the corresponding arc-shaped slide plate (118), the centering wheel (112) on the auxiliary ring frame (108) is rotatably connected to the corresponding centering slide plate (114), and the centering wheel (112) on the propulsion ring frame (109) is fixedly connected to the corresponding centering slide plate (114).

9. The involute flat pipe bending device according to claim 8, characterized in that: A pressing circular plate (103) is also slidably mounted on the bottom plate (101), the axes of the pressing circular plate (103) and the annular mounting seat (119) are in the same straight line, the surfaces of the first strip slide plate (121) and the second strip slide plate (122) closest to the pressing circular plate (103) are in the same plane, and the center line of the rotation connection between the angle adjustment rotating plate (102) and the bottom plate (101) is in the same straight line as the center line of the center mold (120).

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